Bio:Renamed from "Triplicate Girl" in Adventure Comics #341, though she arguably "becomes" Duo Damsel in issue #340, when her third self is killed.

Notes:Duo Damsel, or to be more precise, Triplicate Girl (01), has the distinction of being the first non-founding member of the Legion to be offered membership. In other words, after Lightning Lad, Cosmic Boy and Saturn Girl, she has the most "seniority"—or at least she did before she went into the Reserves.

Annual 03 - 'There's No Substitute for the Real Thing'#4 - 'Lest Villainy Triumph'#14 - 'Unto The New Generation'#38 - 'The Greatest Hero Of Them All'#47 - 'Conspiracy Theory'#48 - 'A Time To Die'#49 - 'A Time To Live'#50 - 'Life and Death at the End of Time'#51 - 'The Trial Of Brainiac Five'#54 - 'Strength In Numbers'#62 - 'The Magic Wars, Part 3: Why Must Magic Triumph?'#63 - 'The Magic Wars, Part 4: Where Has All The Magic Gone?'